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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 613 · 40 questions
TalentJR

How it works (Double and halve): Find the number ending in 5 and the even number. Double the one ending in 5; halve the even one. Repeat while it helps (25 → 50 → 100), then multiply.

NameDateTime takenScore ___ / 40
  1. 1.35 × 34 =
  2. 2.35 × 38 =
  3. 3.65 × 28 =
  4. 4.35 × 8 =
  5. 5.75 × 18 =
  6. 6.6 × 25 =
  7. 7.35 × 28 =
  8. 8.26 × 75 =
  9. 9.55 × 32 =
  10. 10.45 × 34 =
  11. 11.65 × 32 =
  12. 12.10 × 75 =
  13. 13.12 × 35 =
  14. 14.55 × 8 =
  15. 15.35 × 20 =
  16. 16.55 × 34 =
  17. 17.14 × 75 =
  18. 18.14 × 45 =
  19. 19.55 × 16 =
  20. 20.14 × 75 =
  21. 21.75 × 14 =
  22. 22.40 × 125 =
  23. 23.35 × 28 =
  24. 24.12 × 25 =
  25. 25.30 × 75 =
  26. 26.36 × 75 =
  27. 27.75 × 12 =
  28. 28.30 × 35 =
  29. 29.35 × 10 =
  30. 30.40 × 35 =
  31. 31.15 × 8 =
  32. 32.15 × 32 =
  33. 33.15 × 18 =
  34. 34.36 × 75 =
  35. 35.38 × 75 =
  36. 36.8 × 45 =
  37. 37.32 × 125 =
  38. 38.35 × 20 =
  39. 39.15 × 12 =
  40. 40.26 × 65 =

Answer key

  1. 1190
  2. 1330
  3. 1820
  4. 280
  5. 1350
  6. 150
  7. 980
  8. 1950
  9. 1760
  10. 1530
  11. 2080
  12. 750
  13. 420
  14. 440
  15. 700
  16. 1870
  17. 1050
  18. 630
  19. 880
  20. 1050
  21. 1050
  22. 5000
  23. 980
  24. 300
  25. 2250
  26. 2700
  27. 900
  28. 1050
  29. 350
  30. 1400
  31. 120
  32. 480
  33. 270
  34. 2700
  35. 2850
  36. 360
  37. 4000
  38. 700
  39. 180
  40. 1690

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